 
 (def ^:dynamic *incremental-indicator-suffix* "#inc")
 
-(defn create-proc-sub-fn
+(defn- create-proc-sub-fn
+  "Create a sub part of a processing function.
+   The data-processing-definition will be processed recursively.
+   This function is responsible for actually resolving the given data processing functions.
+   The input symbol will be placed as first argument on the innermost terms."
   [data-processing-definition input]
   (into
     '()

       :rules (subvec (:rules dsl-expression) start-idx end-idx)})))

(defn combine-proc-fns-vec
  [fn-mapping dsl-expression]
  (reduce
    (fn [v m]

    data-processing-fn))

(defn combine-proc-fns
  "Based on the DSL expression dsl-expression, create a data processing function in which the processing rules starting at start-idx, inclusive, up to end-idx, non inclusive, are combined.
   Please note that it is usually more appropriate to use combine-proc-fns-vec."
  [dsl-expression start-idx end-idx]
  (if (= 0 start-idx)
    (create-proc-fn
